[Java. Code Formatting] Create a migration activity for java codestyle settings

IDEA-110857

GitOrigin-RevId: 6469cfd69acf5e68dad3cced70942326ebde1c7c

java/java-frontback-impl/src/com/intellij/psi/codeStyle/JavaCodeStyleSettingsMigrationActivity.kt

@@ -0,0 +1,36 @@
+// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
+package com.intellij.psi.codeStyle
+
+import com.intellij.application.options.CodeStyle
+import com.intellij.lang.java.JavaLanguage
+import com.intellij.openapi.project.Project
+import com.intellij.openapi.startup.ProjectActivity
+import com.intellij.psi.codeStyle.CodeStyleScheme.PROJECT_SCHEME_NAME
+
+class JavaCodeStyleSettingsMigrationActivity : ProjectActivity {
+  override suspend fun execute(project: Project) {
+    val applicationMigrationState = JavaCodeStyleSettingsApplicationMigrationManager.getInstance().state
+    val projectMigrationState = JavaCodeStyleSettingsProjectMigrationManager.getInstance(project).state
+
+    if (!applicationMigrationState.areSchemesMigrated) {
+      CodeStyleSchemes.getInstance().allSchemes.forEach { scheme ->
+        if (scheme.name != PROJECT_SCHEME_NAME) {
+          migrateSettings(scheme.codeStyleSettings)
+        }
+      }
+      applicationMigrationState.areSchemesMigrated = true
+    }
+
+    if (!projectMigrationState.areSchemesMigrated) {
+      val settings = CodeStyle.getSettings(project)
+      migrateSettings(settings)
+      projectMigrationState.areSchemesMigrated = true
+    }
+  }
+
+  private fun migrateSettings(codeStyleSettings: CodeStyleSettings) {
+    val commonSettings = codeStyleSettings.getCommonSettings(JavaLanguage.INSTANCE)
+    val customSettings = codeStyleSettings.getCustomSettings(JavaCodeStyleSettings::class.java)
+    customSettings.BLANK_LINES_AROUND_FIELD_WITH_ANNOTATIONS = commonSettings.BLANK_LINES_AROUND_FIELD
+  }
+}

java/java-frontback-impl/src/com/intellij/psi/codeStyle/JavaCodeStyleSettingsProjectMigrationManager.kt

@@ -0,0 +1,31 @@
+// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
+package com.intellij.psi.codeStyle
+
+import com.intellij.openapi.application.ApplicationManager
+import com.intellij.openapi.components.*
+import com.intellij.openapi.project.Project
+
+abstract class JavaCodeStyleSettingsProjectMigrationManagerBase : SimplePersistentStateComponent<MigrationState>(MigrationState())
+
+@Service(Service.Level.PROJECT)
+@State(name = "JavaCodeStyleSettingsProjectMigration", storages = [Storage(StoragePathMacros.WORKSPACE_FILE)])
+class JavaCodeStyleSettingsProjectMigrationManager : JavaCodeStyleSettingsProjectMigrationManagerBase() {
+  companion object {
+    @JvmStatic
+    fun getInstance(project: Project) = project.service<JavaCodeStyleSettingsProjectMigrationManager>()
+  }
+}
+
+
+@Service(Service.Level.APP)
+@State(name = "JavaCodeStyleSettingsApplicationMigrationManager", storages = [Storage("java.code.style.migration.xml")])
+class JavaCodeStyleSettingsApplicationMigrationManager : JavaCodeStyleSettingsProjectMigrationManagerBase() {
+  companion object {
+    @JvmStatic
+    fun getInstance() = ApplicationManager.getApplication().service<JavaCodeStyleSettingsApplicationMigrationManager>()
+  }
+}
+
+class MigrationState : BaseState() {
+  var areSchemesMigrated by property(false)
+}